DNA Principles (SMA 7 Bio 3.1.1-3)

What produces the physical characteristics of a living organism?

• the way the DNA code is altered by the ribosome

• the structure of the proteins its cells produce

• its environment and behavior

• the number of genes it has

Which complementary base sequence can be produced during DNA replication?

• AAA UCG GAG

• ATA GGG CTA

• ATU CCG GAT

• UUU CAC GGA

What would most likely cause a mutation in the DNA of an organism?

• mitosis

• heat exposure

• DNA replication

• radiation exposure

Which enzymes bind to DNA to begin transcription?

• hexocase

• DNA ligase

• RNA polymerase

• DNA polymerase

The diagram shows a cellular process in which a double-stranded molecule of nucleic acid gives rise to a single-stranded molecule of nucleic acid. Which best describes the process shown?

• DNA is transcribed into RNA.

• RNA is transcribed into DNA.

• DNA is translated into RNA.

• RNA is translated into DNA.

The overall roles of DNA and RNA are illustrated.

Which process is represented at Point 3?

• Transcription

• Replication

• Translation

• Mutation

Which amino acids will be coded for the mRNA sequence?

UUU-CCU-CGU

• Phenylalanine Proline Arginine

• Lysine Glycine Alanine

• Arginine Proline Phenylalanine

• Alanine Glycine Lysine

Which mutation in DNA affects the whole DNA sequence after the point mutation?

• Inversion

• Frameshift

• Substitution

• Translocation

What is the relationship between genetic mutations and DNA?

• Changes in DNA lead to genetic mutations.

• DNA and genetic mutations are not related.

• Changes in the ribosomes lead to a change in DNA.

• DNA is dependent on genetic mutations to replicate.

Which correctly places the events of protein synthesis in order?

• DNA pairs with tRNA; tRNA takes amino acid to ribosome; peptide bonds form between amino acids

• mRNA produced from DNA; travels to mitochondria; mRNA pairs with tRNA; carbohydrates from polymers

• make mRNA; mRNA moves to ribosomes; mRNA pairs with tRNA; peptide bonds form between amino acids

• DNA replicated; DNA copy travels to ribosome; DNA pairs with mRNA; peptide bonds form between amino acids